Air conditioner



FIG. 1 is a perspective view of front, right and bottom sides of an air conditioner showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view showing an operating state thereof.

A rear view is omitted, since it is unornamental and forms no part of the subject matter of the claimed design. Symbol and Logo on the display part shown in the broken lines form no part of the claimed design. 

CLAIM The ornamental design for an air conditioner, as shown and described. 